William c



( No Model.)

W. O. BOONE & W. A. WHITFIELD.

I CUT-OFF FOR ARGAND GAS BURNERS. No. 282,260. Patented July 31 1883.

wLl'nesses I'n've'nLOW aw AMW Allowweu UNITTED y STATES wiLLiAM c. BOONE AND'WILLIAM A. WHITFIELD, or BROOKLYN, n. Y.

CUT-OFF Foe ARGAND GAS-BURNERS.

PATENT Orricn.

sPECIFICATION forming part Of Letters Patent N0. 282,260, dated July. 31,1883.

Application filed March 17, 1883. (No model.)

Too/ll whom it may concern:

Be it known that we, WILLIAM (J. BOONE and WILLIAM A. WHITFIELD, both of Brooklyn, in the countyof Kings and State of New York, have invented certain Improvements in .Out Ofis for Argand Gas-Burners, of which the following is a specification. I This invention relates to that class of devices employed for regulating the flow of gas from the pipe to the burner 3 and it comprises certain novel combinations of parts whereby a simple and efficient apparatus for the purpose indicated is secured, and one which, instead of deteriorating or becoming imperfect in operation from continued use, will have its parts more accurately fitted upon each other in proportion as the surfaces in contact are operated. Figure 1 is a vertical longitudinal section of an Argand burner, taken in the line w x of Fig. 3. Fig. 2 is a similar view taken in theline y y of Fig. 3. Fig. 3 is aplanview. Fig. 4 is an inverted plan View of the valve which constitutes a portion of the said apparatus.

A is the base of the burner, constructed in the usual way, to be screwed upon the gas-pipe.

B is the annular body of the burner, supp orted'upon the base A by the tubular arm 0, and communicating at their inner ends with the interior a of the part Aby means of the passages c.

D is the central box, formed in one with the base A at the top thereof, above the tubular arm 0, as shownin Fig. 1. Formed axially in this box, and extended dow nward to the interior a of thebase A,is abar or cylindricalbearing,which receives the valve-stem e, at the lower end of which is the valve F. The upper part of the bar or bearing which receives the stoma is enlarged or tapered, as shown at f, to receive a spring, g, which is placed around the upper part of the valve-stem 6. Upon the top of the latter is a plate, h, secured to said top of the valve-stem by a screw, z. of the spring with reference to the valve-stem 6 enables the said spring to force the valve F up against the seat provided at the top of the interior a of the base A. The valve F (shown in Fig. 4) is provided with openings m, which, when the valves are turned axially to this stem 6, may be brought coincident with the opening 0, thereby establishing communication between the interior a of the base A and the passages This arrangement of the tubular arm 0, and consequently with the interior of the body '13. The top of the valve is flat, as is also the valve-seat against which it bears, as just explained. When an axial movement is given to the valve F, as just explained, to bring the opening an away from the openings 0, communication is shut off be tween the interior a of the base A and that of the tubular arm 0; and by thus turning the valve F to bring the opening 111. onlypartially or to a greater or less degree away from the openings 0, the passage afforded by the latter is graduatedto any degree required to regulate the flow of gas from the interior a of the base A to that of the body B. Theaforesaid axial movement of the valve-stem e, and con sequently to the valve F, is given thereto by a bent lever, G, which is formed in one with the plate h, as shownin Fig. 2, and which may have, when desired, a bulb, n, at its lower end, by which it may be more conveniently grasped for operation. The body A, around that portion of the valvestem c below the upper sides of the passages c, is internally chambered or enlarged, as shown at a", and there is formed through the valve in such a manner as to establish communication between the interior a of the base A and the chamber 1' a small pas sage, r, technically termed a vent, and the object of which is to enable a limited supply of gas to pass tov the bodyB to maintain ignition at the lowest part of combustion, when the valve F is turned to entirely close the pas- .sages c.

It will be observed that from the combination and arrangement of the parts, as hereinbefore explained, thespring g, forcing the flat upper surface of the Valve F against the fiat under surface of the valve-seat, against which it bears, inward, a perfectly-tight joint is forded by the vent or passage r; and, further= more, the said valve and its seat being con= tiguous to that surface, the axial movement of the valve will cause the one to grind upon the other and cause them to conform in contour and more closely iit together and constitute a practically air-tight joint when the valve is turned to close the passages c, as aforesaid.

What we claim as our invention is I. The combination, with the base A, having the valve-seat in the upper part,- arms .0, and body B of an Argand burner, of the valve F within the base A, and stem 6, extending upward through the valve-seat, and provided with plate h, having on the upper edges of the center boX, D, the spring 9, located within the central boX, D, and bearing against the plate to insure-a close joint between the valve and its seat, substantially as set forth.

2. The combination of the valve-stem e, having the valve F, which is constructed with openings m, the base A, the tubular ainf C, communicating with the interior of the said base by the passages 0, the-body B, the boss D, having a bearing for the stem 6, and chambered at its upper part concentric with the said stem, the spring 9, the plate h, formed in one with the bent lever G, and the screw 1, at- 

